Don't be confused, it's obvious.

I phone 4

It's very good for saving time and doing multiple tasks at the same moment

and it's very easy to use and you will never get a virus ( apple for ever )

also it's more classy than blackberry and better for surfing internet, 

some times I use it for reading books, got a wide screen.

If you want to buy it make sure that it's factory unlocked!